Finding the Third Proportional to 988,528 and 2,158,280

Step by Step Solution

1. Step 1: Write the proportion equation
   988,528 : 2,158,280 = 2,158,280 : x
2. Step 2: Convert to fraction form
   988,528/2,158,280 = 2,158,280/x
3. Step 3: Cross multiply
   988,528x = 2,158,280 × 2,158,280
4. Step 4: Simplify right side
   988,528x = 4,658,172,558,400
5. Step 5: Solve for x
   x = 4,658,172,558,400/988,528
6. Step 6: Final answer
   x = 4,712,231.28